Setting tool, dump bailer, and well packer apparatus



R. c. BAKER E-r AL 2,707,998

SETTING Toor., DUMP BAILER AND WELL PAcxER APPARATUS 4 Sheets-Sheet lMay 10, 1955 Filed sept. 26, 195o.

i INVENToRsl REI/BEN 13A/ 52, l

@TMm/sys lMany 10, 1955 R. c. BAKER ET AL SET'TING TOOL, DUMP BAILER ANDWELL PACKER APPARATUS Filed Sept. 26, 1950 4 Sheets-Sheet 2 INVENToRs.REI/BEN CBA/ 52, BENJAM/N Ew/sAz/.sT/M

.QT rom/EVS ""MWNgV/ rl May l0, 1955 R. c. BAKER l-:r A1.

SETTING TooL, DUMP BAILER AND WELL PACKER APPARATUS Filed sept. 2e, 195o4 Sheets-Sheet 3 INVENTORS.

REL/BEN C. BAKER, BEM/A M//v Ew/s Aus r/N,

TTDQNEYS May 10, 1955 R. c. BAKER Er AL SETTING TOOL, DUMP BAILER ANDWELL PACKER APPARATUS Filed Sept. 26, 1950 4 Sheets-Sheet 4 mnwlvllllllll.

M w s,

INVENTORS. R5051EA/ C. BAKE/2, BEM/AMW ZEW/5 AUST/N,

aQA/EYS Unite SETTNG TOL, DUMP BAILER, AND WELL PACKER APPARATUS ReubenC. Baker, Coalinga, and Benjamin Lewis Austin, Long Reach, Calif.,assignors to Baker Gil Tools, Inc., Los Angeles, Calif., a corporationof California Application September 26, 1950, Serial No. 186,856

16 Claims. (Cl. 16S- 63) fluid passage is preferably left unobstructedfollowing LC- the removal of the setting portion of the apparatus fromthe well bore.

Another object of the invention is to provide for setting a well packerand simultaneously dumping cementitious material upon the set packer,without danger of inadvertently depositing some of the cementitiousmaterial within the passage through the packer.

A further object of the invention is to provide a well packer andsetting tool arrangement in which the setting tool aids in centering aWell packer having an elongate, upwardly projecting body, to insure thedeposition of a substantially uniform annulus of cementitious materialaround the upwardly projecting body portion.

Yet another object of the invention is to provide apparatus forsubstantially simultaneously setting the well packer, releasing thesetting equipment from the packer, and dumping cementitious materialaround the set packer, to leave an unobstructed passage through thepacker for the subsequent reception of a string of tubing.

Still a further object of the invention is to provide well packerapparatus capable of being set in a well bore and of having a guideattached subsequently to its upper portion.

Another object ofthe invention is to provide apparatus for attaching aguide to the upper portion of a well packer disposed in a Well bore.

A further object of the invention is to provide apparatus capable ofattaching a guide to the upper end of a well packer, and of placing atubular string in sealing relation to the well packer, in order toestablish leakproof communication between the packer and thetubingvstring. The guide may be permanently latched to the set packer tofacilitate running of the tubing string and its sealing devices into andout of the packer.

Yet a further object of the invention is to provide an arrangement forlowering a guide on a running-in string, latching the guide to a welltool, and releasing the running-in string from the latched guide.

This invention possesses many other advantages, and has other objectswhich may be made more clearly apparent from a consideration of a formin which it may be embodied. This form is shown in the drawingsaccompanying and forming part of the present specication. lt will now bedescribed in detail, for the purpose of illustrating the generalprinciples of the invention; but it is to be understood that suchdetailed description is not to be taken in a limiting sense, since theStates Patent scope of the invention is best defined by the appendedclaims.

Referring to the drawings:

Figures l, la and lb together constitute a longitudinal section, partlyin side elevation, of well apparatus, with its parts in the relativepositions they occupy during lowering of the apparatus in the well bore,Fig. la constituting a lower continuation of Fig. l, and Fig. lbconstituting a lower continuation of Fig. la;

Figs. 2 and 2a are views corresponding' to Figs. la and 1b of the wellpacker anchored in a well bore, with the setting tool released andcementitious material being deposited upon and around the packer, Fig.2a constituting a lower continuation of Fig. 2;

Figs. 3 and 3a are views similar to Figs. la and 1b, illustrating anadapter on a tubing string for latching onto the upper end of the bodyportion of the wheel packer, Fig. 3a constituting a lower continuationof Fig. 3;

Fig. 4 is a cross-section, on an enlarged scale, taken along the line 44 on Fig. 2a;

Fig. 5 is a cross-section, on an enlarged scale, taken along the line 55 on Fig. 3;

Fig. 6 is a cross-section, on an enlarged scale, taken along the line6-6 on Fig. 3;

Fig. 7 is a view similar to Fig. 6, illustrating the coupling or snapring in released position;

Fig. 8 is a fragmentary longitudinal section, on a greatly enlargedscale, illustrating the adapter or guide shown in Fig. 3 in latchedrelation to the upper end of the packer body and the tubing string stillcoupled to the guide;

Fig. 9 is a view similar to Fig. 8, illustrating the tubing stringreleased from the guide;

Fig. l0 is a view similar to Fig. 3 of the guide attached to the packerbody, and with the tubing string in sealed relation to the packer body.

In general, the apparatus disclosed in the drawings includes a wellpacker A which may be set in an open well bore B through use of asetting tool C initially coupled to the packer. The setting tool isconnected to a suitable running-in string D, such as a wire line, bymeans of which the equipment is moved through the well bore. It isdesired to set the packer A in the well bore, dump cementitious materialE around the packer; so as to leave an unobstructed passage through it,and release the setting tool C for elevation to the top of the hole. Forthis reason, a dump bailer portion F is included within the setting toolC, to enable the cementitious material to be deposited around and uponthe packer after the setting tool has set the packer in the well bore.Because of the arrangement illustrated, setting of the packer anddumping of the cementitious material upon and around it is made with asingle trip of the running-in string in the well bore.

After the packer A has been set, the cementitious material E depositedaround it, and the running-in string D and setting equipment C removedfrom the well bore, a tubular string G may be lowered in the bore holefor the purpose of coupling Va guide H to the upper end of the wellpacker. The tubing string is also placed in sealing engagement with theinterior of the well packer. Coupling of the guide El to the packer A,and the placing of the tubular string G in sealed relation to the Wellpacker, preferably occurs during the same trip of the tubing string intothe well bore, in order to save time, with its attendecouomies ofoperation. The guide itself remains coupled to the well packer, to guidethe lower end of a tubing string, or the like., back into appropriaterelation to the well packer, or to facilitate the running of any otherequipment into or through the set packer.

The well packer portion A of the apparatus includes a tubular body 16having a guide or lower abutment 11 threaded on its lower` end. An upperabutment 12 is slidable in a relative downward direction along thepacker body a substantial distance above the lower abutment 11, and isengageable with a set of upper segmental slips 13 disposed around thebody immediately below the abutment 12. The abutment 12 is heldinitially in an upper position by a shear pin 12hl attaching it to thebody 1b. These slips 13 are held initially in retracted position byshear screws 14 attaching them to an upper conical expandcr 15 initiallysecured to the body 16 by one or more shear pins 16. The converginginner surfaces 17 of the upper set of slips and the companion outersurface 1S of the expander 15 are so disposed vith respect to oneanother as to secure the packer against movement in an upward directionwithin the well bore i3, following outward expansion of the slips 13into engagement with the wall of the bore hole.

A set of lower segmental slips 19 is provided adjacent the lowerabutment 11, these slips being secured by shear screws 2t) to a lowertapered expander 21 attached initially to the body 1l) by one or moreshear pins 22. The direction of taper on the exterior 23 of the lowerexpander and the taper on the inner surfaces 24 of the lower slips aresuch as to hold the well packer against movement in a downwarddirection, following expansion of the slips 19 outwardly against thewall of the well bore B.

A suitable locl: is provided between the upper abutment and the body1i), to permit upward movement of the body within this abutment, but topreclude its downward movement. As illustrated, the lock includes asplit ring or sleeve 25 contained within the upper abutment 12 andhaving an inner roughcned surface 26 for engaging the periphery of thepacker body 1t). The outer surface of the latch sleeve is provided withtapered surfaces or teeth 27 engaging correspondingly tapered surfaces23 in the upper abutment. These surfaces are inclined in an upward andoutward direction, functioning as cams wedging the latch sleeve 25between the body 10 and the upper abutment 12, in the event the bodytends to move relatively downward within the abutment. However, upwardmovement of the body 10 tends to move the latch sleeve 25 upwardly inthe upper abutment 12 and relieves thc cocngaging cam faces 27, 28,which allows the ring 2S to expand and become free of the body 1t). ineect, the latch arrangement constitutes a one-way coupling or clutchpermitting relative upward movement of the body lt) within the upperabutment 12, but precluding its relative do.mward movement therewithin.

A suitable packing 29, such as a packing sleeve of rubber or simiarpliant, elastic material, is disposed around the body 1i? between theupper and. lower expanders 15. 21. This packing sleeve encompasses acylindrical stop sleeve 3i) mounted on the paci-:er body 19, and havinga length which is substantially less than the initial distance betweenthe expanders 15, 21 when the shear pins 16, 22 are intact. This stopsleeve 3) serves to limit the extent of outward expansion of the packingsleeve 29. upon foreshortening of the latter as a result of moving theexpanders 15, 21 toward one another.

In setting the packer, a downward force is exerted on the upper abutment12 of suiiicient extent to shear the pin 12u and the screv. 14 attachingthe upper slips 13 to the upper expander 15. These slips are then moveddownwardly along the upper expander .1S and radially outward intoanchoring engagement with the well bore P. Such outward expansion of thcupper slips 13 can occur, since their retaining shear screws 14 have alesser combined shear value than the pins 15 securing the upper expander15 to the body 1li. These last-mentioned pins have a lesser value thanthe pins 22 holding the lower expander 21 to the body 1), and the screws29 holding the lower slips 19 to the lower expander'.

After the upper slips 13 have been engaged with the lli . threadedcouplings wb.

wall of the well bore B, an upward strain or pull is imparted to thepacker body 19, which shears the pins 16 holding the upper expander 15to the body 10, and moves the lower expander 21 and lower slips 19 withthe body toward the upper expander. This action foreshortens the packingsleeve 29 and etlects its outward expansion into firm sealing engagementwith the v/ail of the well bore B. The paci-:ing sleeve cannot beiorcshortened and expanded laterally outward beyond the extent at whichthe stop sleeve 3) engages both the upper and lower cxpanders 15, 2l,thereby preventing outward expansion of the packing sleeve to too greata degree, which might result in its inability to eflect a proper sealwith the well bore B.

An increase in the upward pull or force on the packer body 1i)substantially simultaneously shears the pins 22 holding the lowerexpander 21 to the body 1i) and the screws 2u attaching the lower slips19 to the lower expander, causing the lower body abutment 1l to shiftthe lower slips 19 upwardly along the lower expander 21 and radiallyoutward into anchoring engagement with the wall of the bore hole B (Fig.2a). The latch sleeve 25 then is wedged by the lowering tendency of thebody 10 between the body and the upper abutment 12, to loci; the body1i) against downward movement. Any tendency for the body to movedownwardly is transmitted through the upper abutment 12 and upper s.ips13 to the formation wall. if such slips do not remain wedged against theformation wall, then the downward moving tendency is transmitted throughthe upper expander 15, packing 29 and stop sleeves lower cxpander 2l andlower slips 19 to the formation wall. lt is to be noted that the wickers115e on the lower slips are relatively deep, so as to embed themselvesto a substantial extent in the wall of the well bore B.

Any tendency of the body 1li to move upwardly is resisted by engagementof the lower abutment 11 with the lower slips 19, the upward force beingtransmitted from the latter through the lower expander 21, packing andstop sleeves 29, .'iti, upper expander 15 and upper slips 13 to theformation wall. Here again, the wickets or teeth 13a on the upper slipsface in an upward direction and are relatively deep, to embed themselvesquite extensively in the formation wall.

In the manner just described, the well packer A is anchored inpacked-olf condition against longitudinal movement in both directionswithin the open well bore B.

The specific well packer illustrated is designed to be set in openholes. It is desired to have an open passage 32 through it, to allowequipment to be lowered into or through the packer body 1K1). ln orderto supplement the anchoring action of the slips 13, 19, the packer body1t) preferably has an upper extension which may include one or moretubular body portions 10a secured to the lowermost body portion 10, andto each other, by suitable The body portions 10, 19a preferably havesubstantially the same internal and external diameters. They may extendupwardly from the well packer to as great an extent as desired. As anexample, the tubular bodp 10 and its extensions 10a may project aboutfour to ten feet above the upper packer abutment 12.

1t is desired to provide an arrangement which will enable the wellpacker A to be run in the well bore in a rapid manner and also to dumpcementitious material E upon the set packer and around its tubular bodyand extensions 10, 10a. Such expeditious lowering of the packer in theWell bore can be accomplished through use of the wire line D. Themechanism C for setting the packer not only performs its settingfunction, but automatically releases itself from the set packer when adesired maximum force has been exceeded, and dumps the come titiousmaterial upon the set packer and around its body portions 1t), 19u, inorder that the cementitious material will form a supplemental annularplug serving to anchor the packer in the well vbore and prevent leakagethereby.

In the apparatus disclosed in the drawings, setting of the well packeris dependent upon the development of a gas pressure within the settingtool C secured initially to the well packer. This gas pressure isdeveloped within the upper portion of a cylinder` 33 consisting of agenerally cylindrical sleeve 34, an upper head 35 threaded into thissleeve, and also a lower head 36 threaded into this sleeve.

A motivating gas under pressure is generated in the cylinder 33, andthis force is imposed upon a piston 37 slidably mounted in the cylinder.This piston has one or .more seal rings 3S, such as round rubber rings,to prevent leakage between it and the cylinder sleeve 34 in bothdirections.

The upper end of a piston rod 39 is threadedly connected to the piston37, the rod extending downwardiy through the lower cylinder head 36 to apoint therebelow, where an anvil or cross-piece 40 is mounted within H atransverse slot 41 in the rod. Leakage between the rod 39 and lowercylinder head 36 is prevented by suitable rod packing 42 in the form ofround rubber or rubberlike seals carried in the head and engaging theperiphery of the rod. These packing seals 42 prevent leakage of liquidsfrom the well bore B into the cylinder 33 below the piston 37, insuringthat air under atmospheric pressure in present below the piston when theapparatus is assembled and lowered in the well bore.

It is desired to transfer the downward movement or force imposed uponthe piston 37 and the piston rod 39 to the upper abutment 12 and upperslips 13 of the packer, and the relative upward movement of the cylinder33 to the packer body 10 and its upwardly projecting extensions lita, inorder to obtain the desired anchoring of the packer A in the well borein the manner described above. To accomplish this purpose, a tubularactuating mandrel 43 is threadedly connected to the lower cylinder head36, the lower end of the mandrel being threaded onto the upper end of anadjuster sub 44, which is, in turn, secured to an upper tension bar 45.The adjuster sub 44 may be appropriately threaded upc-n the uppertension bar 45 to obtain the proper length of the portions of thesetting mechanism in tension, whereupon a lock nut 46 can be threaded onthe upper tension bar 45 and jammed against the adjuster sub 44, to lockthe sub and upper tension bar together.

The upper tension bar is threaded into a coupling 47, which, in turn, isthreaded onto a lower tension bar 48 that extends downwardly through thetubular body members 10, 10a and well into the lower portion of the wellpacker. The lower end of the lower tension bar 48 is threaded into arelease head 49 screwed onto the upper end of a releasing or tensionstud 5i) having an intermediate portion 50a of reduced diameter. Thelower end of this stud 50 is threaded into a depending shank 5l that is,in turn, suitably secured to a latch retaining abutment or head 52having an upward and inwardly inclined face 53.

Any upward forec imposed upon the tension bars 45, 48, release head 49,release stud 5i?, shank 51 and retainer head 52 is adapted to beimparted to the lower portion of the packer body 1b. vThis force istransferred from the inclined face 53 of the retaining head onto`companion inclined inner faces 54 on latch feet 55 integral withspring-like leg members 56 forming the lower portion of a latch sleeve57 which extends upwardly to a point above the release head 49. At thispoint, the sleeve is provided with an inturned shoulder 5S initiallyspaced upwardly from the upper end of the release head 49. The outerinclined faces 59 or" the latch feet 55 engage a companion inclined orfrusto-conical surface 60 on the lower guide or abutment portion 11 ofthe packer body 10. These faces 59, 60 serve to transmit any upward der62 and retrieving sleeve shoulder 63.

force imposed on the retaining head 52 directly to th packer body 1i). t

When the parts forming the mechanism for coupling or locking the tensionbars 45, 4S and release head 49 to the packer abutment occupy thepositions shown in Fig. lb, the latch sleeve shoulder 58 is disposed asubstantial distance above the tension head shoulder 49. The inclinedface 53 of the retaining head 52 bears upon the inclined faces or latchfeet 55, and tends to urge and hold them outwardly against the lowerinclined face 60 of the lower abutment lll. v

Upon the exertion of sufficient tension on the releasing stud 50 to pullit apart at its reduced diameter portion 50a, the shank 51 and retaininghead 52 drop downwardly to remove the head 52 from its retainingposition behind the latch feet 55, allowing the latter to be disengagedfrom the packer abutment 11. The latch retaining head 52. and its shank5l can drop to the extent limited by engagement of the shank shoulder 62with an inwardly directed flange 63 on a retrieving sleeve 64 threadedonto the lower end of the tension release head 49.

Following disruption of the releasing stud 50 and dropping of the latchretaining head 52, upward movement on the tension bars 45, 48 will liftthe tension head 49 with it, causing the shoulder 49a on the latter toengage the upper shoulder 5S on the latch sleeve 57, pulling the latchelements 56 and their foot portions 55 upwardly and inwardly within thepacker body lil. Such upward movement of the tension bars 45, 48 andtension head 49 also causes the retrieving sleeve shoulder 63 to engagethe shoulder 62 on the shank 51 and elevate the retaining head 52through the packer.

It is to be noted that all or" the locking elements, with the exceptionof the spring-like foot portions 55 on the latch sleeve 57, are smallerin diameter than the internal diameter of the passage 32 through thepacker body l@ and the packer body extensions lila. Since thespring-like feet 55 and legs 56 can dex inwardly, the entire lockingmechanism may be removed from a set Well packer, and elevated with theremaining portions of the setting tool to the top of the well bore. Itis also to be noted that the initial distance beween the latch sleeveshoulder 5S and tension head shoulder 49a is substantially less than thedistance between the shank shoul- This disparity of distance insuresagainst the head 52 again moving within the latch feet 55 duringelevation of the setting tool C, following disruption of the stud 50.

The piston rod 39 is movable downwardly within the bore 65 or theactuating mandrel 43, the cross-piece 4t) projecting in oppositedirections from the rod 39 through diametrically opposed, longitudinallyextending slots 66 formed through the mandrel wall. The cross-piece 4()also extends into opposed slots 67 formed through a :rsetting ring 65slidably mounted on the actuating mandrel 43 to form a connectionbetween the piston rod 39 and the setting ring 68. A setting sleeve orskirt 69 is threaded on the setting ring 68, the lower portion of theskirt being secured to a sub or collar 70 threaded onto thel upper endof the bailer portion F of the setting tool C. This bailer portion is inthe form of a container, and may include a top bailer, cylinder orcontainer portion 7l threaded into a coupling 72 that is welded orotherwise suitably secured to a lower bailer container or bailer bottom73 that encompasses the upper portionof the upper abutment l2 and restsupon a shoulder 74 formed on the latter. The bailer F may be made ofsections, depending upon the distance between the upper sub or collar7i) and the upper packer abutment 12, which, of course, depends upon thelength of the packer body extensions 'itin and of the tension bars 45,48 and associated internal parts of the setting mechanism C.

When the apparatus is assembled, with the retaining head 52appropriately disposed behind the latch feet 55, and the latter engagingthe inclined surface 60 on the lower abutment Il, the parts may besecured in this posi tion by a lock plate 75 disposed over the upper endof the lower tension bar 48 and engaging the upper end of the uppermostbody extension itl/1. A lock nut 76, threaded on the upper end of thelower tension bar 48, holds the lock plate '75 in such position andprevents dropping of the lower tension bar 4S, release head 49, tensionstud 5G, latch body or snank 5i, and latch head 52, which action woulduncouple the lower portion of the setting tool from the packer body itl.After the lock plate 75 and lock nut 76 have been appropriately mountedwith respect to the lower tension bar 4S and packer body 10, theremainder of the internal setting tool mechanism may be attached to thelower tension bar 4S, in the manner illustrated in the drawings.

The bailer portion F of the apparatus is spaced outwardly from theinternal tension portion of the apparatus to forni an annular space 77therebetween. The bailer portion of the apparatus is also spacedlaterally outward from the exterior of the packer body it) and itsextensions 1011 to form an annular space 73 therebetween. These annularspaces are provided for the reception of cementitious material E, thatcan be deposited within the annular spaces 77, 78 through an opening orwindow 79 in the upper portion of the bailer F, that may be locatedadjacent the sub or collar 7u. ln order to prevent such cementitiousmaterial E from entering the passage 32 through the body lt and itsextensions ilzz, a suitable wiper ring Sil, of rubber or rubber-likematerial, is disposed within an internal groove 8l in the upper portionof the tubular body illu. The inner surface of this wiper member 80engages the exterior of the lower tension bar 48, to preclude droppingof cementitious material into the passage 32 once the locking plate 7Sis elevated from the upper end of the packer body.

Leakage from the lower end of the bailer bottom 73 of the bailer is`prevented by a suitable packing S2 in the upper abutment 12 engagingthe inner wall of the bailer bottom, and also by a suitable packing ring83 on the abutment engaging the periphery of the packer body 10. lt isonly when the lower end of the bailer F is moved upwardly olli the upperabutment l2 that the cementitious contents E of the bailer F may bedeposited upon the set packer A and around the packer body itl and itsextension or extensions 10a.

As indicated above, a gaseous force or pressure is imposed upon thepiston 37 to move it downwardly and to move the cylinder 33 relativelyin an upward direction, for the purpose of setting the packer A,releasing the setting tool C from the packer, and dumping thecementitious contents E of the dump bailer F upon and around the setpacker. This gaseous force or pressure may be obtained trom acombustible fuel or power charge 84 contained within the upper end ofthe cylinder This combustion charge 8i, such as a railway flare ocylindrical or stick form, is placed in tl e pper head end of thecylinder within a comb zstion chamber $5 formed therein. The charge isignited by a blank cartridge S6 disposed within a gun barrel S7 insertedwithin the upper end of the upper cylinder head Leakage between thebarrel 37 and head 35 is prevented by suitable side seals 85 on the gunbarrel engaging the Wall of the head. The barrel is threaded into acable head S9, which, in turn, is threadedly secured to the upper end ofthe cylinder head 3S. The wire line runningin string is suitably securedto the cable head, in a known manner, and has the lower end of itselectrically conductive wire or core 93 connected electrically to aheating f. ament 91 contained within the cartridge S6.

The apparatus is lowered in the well bore, with the parts occupying thepositions shown in Figs. l, la and lb, and with the proper quantity ofcementitious material E disposed within the dump bailcr F. When thedepth in the well bore is reached at which the well packer A is to beset and the cement dumped upon and around the set packer, the electriccircuit through the cartridge filament 91 is completed, which tires thecartridge 86. The tlarne issuing therefrom ignites the upper end of thepower charge S4, initiating its combustion. This charge contains its ownsource of oxygen to support combustion. As combustion proceeds, gas isdeveloped within the cylinder above the piston at a gradually increasingpressure, As the pressure increases, the piston 37 is urged downwardlyand the cylinder 33 relatively upward. The force imposed on the pistonis transmitted through the rod 39, cross-piece lu, setting ring 68,setting sleeve 69, collar 70 and dump bailer F to the upper abutment 12and upper slips 13. When su'licient pressure has been developed withinthe cylinder by the gaseous medium to overcome the shear strength of theshear pin 12u and shear screws t4 holding the upper slips 713 to theupper expander 15, the pin and screws are disrupted, and the slips 13are released from the expander, being pushed downwardly along the latterinto outward engagement with the wall of the well bore B.

As the combustible charge 34 continues to burn, the gas pressure withinthe cylinder 33 increases to a further extent, and this increasedpressure or force is transmitted to the piston 37. Since the upper slips13 are wedged against the well formation, the piston cannot movedownwardly to any further appreciable extent. Accordingly, the cylinder33, actuating mandrel 43, adjuster sub 44, upper tension bar 45,coupling 47, lower tension bar 48, tension head 49, release stud 5d,shank 51, latch head 52, latch sleeve 57, body abutment 11 and body it)are urged in an upward direction. When the pressure and torce within thecylinder has increased sufficiently to overcome the shear strength ofthe pins 16 attaching the upper expander i5 to the body l, such pins aredisrupted and the packer body itl is moved upwardly within the upperexpander l5 and Lipper abutment 12 to compress the rubber packing sleeve39 between thc upper and lower eX- panders 1S, 21, forcing it into firmsealing engagement with the wall of the well bore B. lf the well bore isof relatively small diameter, the packing sleeve 29 will be compressedto the desired extent without engagement of the stop sleeve 30 with theupper expander 15. Otherwise, the stop sleeve 3i) will engage the upperexpander and place a definite limit on the extent of outward eX- pansionof the paeltirny sleeve 29.

Further increase in the cylinder gas pressure, as a result or" continuedcombustion of the charge 34, effects shearing of the pins 22 attachingthe lower expander 21 to the body itl and of the screws 2i? .ecuring thelower slips i9 to the lower expander, allowing the cylinder 33 to moveupwardly and carry the body 10 and lower slips 19 in an upward directionto shift the latter along the lower expander 2l and radially outwardinto engagement with the wall of the well bore B.

The pressure in the cylinder 33 continues to increase, as combustion ofthe charge 84 proceeds, and all of the packer elements 13, i9, 29 areengaged more lirmly with the formation. When the pressure exceeds thetensile strength of the reduced diameter portion u of the releasing stud50, this stud is pulled apart at such wealiened portion to releaseautomatically the setting tool C from the well packer A. This releaseoccurs as a result ot' dropping of the latch retaining head from thelatch feet 55, to the extent limited by the engagement of the shankshoulder 62 with the retrieving sleeve llange 63.

'this dropping removes the latch retaining head 52 from its holdingposition behind the latch feet 55, and allows the latter to be pulledupwardly with the remainder of the setting tool during elevation of thelatter. Such upward pulling occurs because of engagement of the tensionhead shoulder 49a with the inturned shoulder 58 of the latch sleeve 57.Of course, the shank 51 and latch retaining head S2, as Well as thelower portion of the releasing stud 50, are also elevated through thewell packer A with the remainder of the setting tool C, since 9 theseelements are supported by the retrieving sleeve 'lange 63.

Following disruption of the release stud S0, the tension bars 45, 48 andparts connected thereto are elevated by the cylinder 33, which elevatesthe locking plate 75, as a result of its engagement by a shoulder 93 onthe lower tension bar 48. The ceinentitious material cannot drop intothe packer body lo, 10a because of the presence of the wiper ring orsleeve Sil, which allows the lower tension bar l to be raised withoutopening the packer body to the dropping of any materials thereinto. Thewire line D and its attached setting tool C may now be elevated by theoperator, the lower cylinder head 36 engaging the piston 37 and pullingthe setting sleeve 69 and the dump bailer F upwardly with it. Thisaction is preferably performed slowly to remove the bailer bottom 73from the packer abutment 12, which opens the lower end of the bailer andallows the cementitious contents E to drop down upon the anchored packerA and around the packer body 10, 10a and the body coupling or couplings10b. During the slow elevation of the setting tool parts, thecementitious contents E of the bailer are dropping out ot the latter.Before the tension bar 4S is elevated above the wiper sleeve Sd, thecementitious material in the bailer F would all be disposed below theupper end of the packer body 10a. Accordingly, the elevation of thesetting tool mechanism C can continue, the latching sleeve 57 engagingthe rubber wiper sleeve dit and forcing it out of the body groove 31',this wiper sleeve then being removed with the setting tool C and itsbailer portion F to the top of the well bore, leaving an unobstructedpassage 32 through the well packer body (Figs. 3 and 3a).

As is evident from an inspection of Figs. 3 and 3a, the well packer A isanchored iirrnly in the open well bore B in leakproof relation withrespect thereto. This anchoring and sealing relation is enhanced by thecementitious material E that has been dumped upon the upper abutment 12,lupper slips 13, upper expander and packing sleeve Z9, and also aroundthe packer body 1o, lila and its coupling 10b. Upon setting andhardening, the cementitious material forms a supplemental. plug orpacker anchoring the packer body-1i?, 16m in the open well bore B. Notonly does the cement plug E prev-ent leakage between the body 1t), 1bnand the wall of the well bore B, but the body is itself embedded in thecement, the holding force of the cement being enhanced by engaging theupper and lower -ends or the threaded coupling collars 10b. Thecementitious material in the bailer is usually suicient in quantity toprovide an annulus of cement around the packer body 1d, 1bn extending upto the upper portion of the latter, but not surrounding the uppermostportion.

in order to facilitate the centering of the well pack-er A in the wellbore B, centering wings or ribs 95 may be provided on the packer bodyextensions 19a, which tend to maintain a coaxial relationship betweenthe dump bailer portion F of the setting tool and the well packer A. lnview of the length of the setting tool C, the centering wings or ribs 95will preclude any substantial inclination or tilting of the well packerA and its body elements llt?, 1de in the well bore, particularly incrooked holes. The setting tool C will, therefore, set the slips 13, 19and packing sleeve 29 against the wall of the well bore E, with thepacker body 10, 10a substantially coaxial of the hole axis. Suchcoaxiality will also result in the deposit of a substantially uniformannulus of ceinentitious material E around the body, which not only willprovide a proper cement seal between the body and Wall of the formation,but will insure the permanent coaxial position of the body in the wellbore, regardless of harmful eilects that might occur on the slips andpacking sleeve in the future. The coaxiality of the packer body 10, 16awill also facilitate the subsequent coaction or correlation of othersubsurface well equipment with the well packer A.

After the packer A has been set in the well bore and the cementitiousmaterial E deposited around it, theentire setting mechanism C is removedfrom the well bore, which leaves the well packer and the cement in thecondition illustrated in Figs. 3 and 3a, in which the passage 32 throughthe packer is fully open. After the cement E. has set and hardened, astring of tubing G is to be disposed in sealing relation to the wellpacker, to allow well production below the packer to enter the packerand pass upwardly through the tubing string to the top of the well bore.Conversely, iluids may be pumped down the tubing string G and throughthe packer A into the well -bore B below the packer.

It is rst desired to secure a guide or adapter H to the upper end of thepacker body lila, to facilitate subsequent running of a string of tubingG, or other Well tools, into or through the set packer A. As shown inthe drawings, this guide may be attached to the lower end of a tubingstring. r[he guide H itself includes a main body portion 14S@ having alower irusto-conical inner guide surface 101 dii/erging in a downwarddirection, and also an upper tapered or truste-conical guide surface 192diverging in an upward direction. rl`his guide has an inner bore orpassage M93 which is slightly greater in diameter than the outsidediameter of the tubing string G secured to it.

The tubing string G is attached to the guide H initially by a releasablelatching device. Thus, the upper portion of the guide adjacent the uppertapered guide surface 1i2 is enlarged in inside diameter to provide anannular pocket ldd (see Figs. 8 and 9) and form an annular shoulderfacing in an upward direction. A snap, coupling or latch ring 106 isheld partly in the pocket itl-4 by a shear screw it? which extendsthrough the guide body 16d and is threaded into a thickened portion ofthe ring diametrically opposite the split 1&8 of the ring (see Fig. 6).The remainder of the ring extends into a peripheral groove 109 formedbetween a lower tubing string sub 11d and an upper sub 111 threaded ontothe former member. The split ring lilo tapers gradually from its midportion receiving the shear screw towards its ends defining the split168, the normal unrestrained inside diameter of the ring being butslightly greater than the diameter of the groove base 112.

The ring 106, when unrestrained, occupies the position illustrated inFig. 7, with its periphery disposed entirely within the contines 0f thegroove 109, allowing no projecting portions that may tend to hang up onother elements in the well bore. When the guide H is to be coupled tothe tubing string G, the shear screw 107 is inserted through the guidebody 10i) and is threaded into the bore 113 of the ring. Tightening ofthe screw 107 pulls the ring 106 outwardly, the ring expanding uponbeing pulled over the groove base 112 until the medial portion of thering is resting upon the guide shoulder 195, and with the inner portionof the ring disposed within the peripheral groove 109. With the parts inthis position, any downward thrust imposed upon the tubing string G isnot transmitted through the shear screw 107,

i shearing force on the screw 107. Assuming that the screw is sheared bysuch upwardly directed force, the ring 1dr? will then be free fromrestraint by the screw and will snap inwardly completely into the groove109, in view of the spring force in the snap ring that has been impartedto it upon beino rnoved laterally by the screw 167 to coupling positionupon the guide shoulder 1615 (see Fig. 7).

The guide H, coupled to the tubing string G in a manner described aboveand as depicted in Fig. 3, is to be latched onto the upper end of thetubular packer body a. To accomplish this purpose, the upper end of thepacker body is provided with a plurality of annular downwardly facingratchet teeth 111i on its periphery. The lower portion of the guide bodyadjacent its lower guide surface 191 `las a split ratchet sleeve or ring115, which is generally similar to the locking sleeve of the packer.This sleeve 115 has internal annular ratchet teeth 116 companion to thebody ratchet teeth 114, and is provided with cam surfaces 117 eooperablewith companion cam surfaces 113 formed in the guide body 11N). These camsurfaces 117, -1S taper in a downward and inward direction.

The split ratchet sleeve 115 is held within an annular pocket 119 formedin the lower portion of the guide body 1G() by a bushing or metallicsleeve 12@ encompassing the lower sub 116 and disposed within an annulargroove 121 in the guide body. The yupper end of this groove communicateswith one or more bleeder holes 122, to prevent the entrapment of iluidsor foreign substances in the annular' groove 121. 'lhe bushing 12d isdisposed across the inner teeth 116 of the ratchet sleeve 115, topreclude loss of the latter from the guide body 1%, by one or more shearscrews 123 extending through the body 1Gb and into the bushing 120. Thebushing itself terminates at or slightly above a horizontal planethrough the uppermost portion of the lower guide surface 101, so as notto interfere with the guiding function of the latter.

The guide and sub combination is arranged as illustrated in Fig. 3, withthe shear screw or screws 123 securing the bushing to the guide, andwith the latch or snap ring 1515 held in coupling relation to the guideH and subs 1.10, 111 by the shear screw 1il7. The upper sub 111 isscrewed onto the lower end of the tubing string G and the tubing stringlowered in the well bore. When the upper end of the packer body 10a isreached, the lower tapered guide surface 101 tends to center the guidingdevice with respect to the upper end of the body, the bushing coming torest on the upper end of the body, with the lower end 11Ga of the sub11i) disposed centrally of the packer body axis. This lower endpreferably .ias an exterior downwardly converging surface to facilitateentry ot the tubing string in the packer body 16d, as well as in theguide itself.

When the bushing 120 comes to rest on top of the body 10a", a downwardforce is imposed on the tubing string G which is transmitted through theupper sub 111 to the snap ring 196. This force passes from the snap ringdirectly to the guide shoulder 165 without being imposed on the shearscrew 137. However, the force is transmitted from the guide body to thelower shear screw or screws 123, this force, when of suicient value,shearing the latter elements and moving the guide body 1G() downwardlyover the upper portion 114 of the packer body 1th?. During such downwardmovement, the ratchet sleeve 115 can ratchet over the annular body teeth11411 until the bottoni or" the annular groove 121 or lower shoulder 139on the guide bod" 106 engages the upper end ot the bushing 12). Theinternal annular ratchet teeth 115 on the ratchet sleeve 115 then engagethe body teeth 114 and preclude upward movement of the ratchet sleeve.This sleeve also h lds the guide body 193 from upward movement, sinceany tendency for the latter to move upwardly is prevented by its camfaces 11S wedging against the external cam faces 117 on the ratchetsleeve 115, and urging the latter more firmly into the body ratchetteeth 114.

lf a suicient upward strain is then taken upon the tubing string G, itwill be transmitted through the lower side of the peripheral groove 1&9to the snap ring 1&6. Since there is no upper guide body shoulderengaging the snap ring, this upward force is transmitted to the shearscrew 167. When sufficient, the shear screw 107 is disrupted, whichfrees the tubing string G from the adapter ll. However, the adapter Hwill remain coupled to the body 19u, since its downward movement isprevented by engagement with the bushing 120, which, in turn, rests uponthe upper end of the body 10a; and its upward movement is prevented bythe lock sleeve 115.

The tubing string G may now be withdrawn from the weil bore B, ifdesired. However, a suitable sealing device is incorporated in thetubing string, to enable the latter to be run downwardly within thepacker body 10, 1th: and be placed in sealing engagement with the bodywall without the necessity for another round trip in the well bore. ltis for this reason that the snap ring 106 is so designed as to retractcompletely within the confines of the sub groove 139 after the shearscrew 167 is dis rupterl (Figs. 7, 9, l0). This retraction will enablethe tubing string G to be lowered through the adapter H and into thepacker body passage 32, to effect sealing en gement between the packerbody 18, 10a and the Jing string. The sealing device may be incorporatedon tubing subs 131, 132 that actually form part of the tubing string G.Thus, an upper sub 131 may be threaded onto the lower end of a tubingsection, and this upper sub is, in turn, threaded into a bottom sub 132which is threaded into the upper sub portion 111 of the guiding deviceH. The top and bottom tubing subs 131, 132 have oppositely lacingshoulders 133 defining an elongate circumferential groove 134 receivinga packing unit, which includes downwardly facing chevron type packingrings 135 with intervening metallic spacer rings 136, and also upwardlyfacing chevron type packing elements 137 and intervening metallic spacerrings 13S.

After the guide H has been latched or coupled to the upper end of thebody 10a and the snap ring 1Go released from the guide, the tubingstring G may be lowered to position the latcl'iing subs 11), 111 and thetubing subs 131., 132 entirely within the packer body passage 32, andwith the chevron type seals 135, 137 in sealing engagement with theinner wall of the packer body. Such downward movement and properlocation of the seals may be limited and determined by engagement of alocater sub 139 on the tubing string G with the upper tapered guidesurface 102 of the adapter guide body 199 (see Fig. lll).

With the tubing string G in lealtproof relation to the packer body 1t),16a, fluids may now move from the well formation below the packerthrough the body passage 32, and into the tubing string G, to beconducted to the top of the well bore. Conversely, iuids may be pumpeddown the tubing string G and through the wcii packer A.

At any time, the tubing string G may be removed from the well packer Aand retrieved from the hole Subsequent lowering oi the tubing stringwith proper sealing elements thereon, such as the chevron packingassembly 13S, 137 disclosed, can be had with assurance that the tubingstring will properly enter the well packer. 'ihc lower end la of thetubing string will engage the upper tapered surface 162 of the guide H,which wiii steer thc tubing string centrally into the guide and downinto the passage 32 through the packer body 1G, 10ft. For that matter,other devices than the tubing string may be so centered and steered intothe passage 32 through the well packer by the upper guiding surface 16E.

it is, therefore, apparent that well apparatus has been provided inwhich a well packer A may be set in a weil bore B, as in an uncasedhole, by a setting apparatus C that also deposits cementitious materialE around the may be latched to the upper end of the body 16a withoutobstructing its passage 32, and the tubing string G placed in sealingengagement with the inner wall of the packer body. If desired, thelatching of the guide H onto the packer body 10a and the placing of thetubing string G in sealing relation to the body can occur during asingle run of the tubing string in the well bore. The guide itself isinitially secured to the running-in or tubing string in such manner asto preclude inadvertent release of the guide from the tubing string. lnthis connection, it is to be noted that any upward force on the guide H,which might be caused by its meeting an obstruction in the well bore, isnot transmitted through the upper shear screw 167, but, instead, istransmitted from the guide body lti, through the snap ring lilo to theupper sub 111 of the tubing string G.

The feature of invention disclosed in Figs. 3, 3a and 5 to l0,inclusive, and relating to the structure for securing the tubing stringguide H to the well packer A is both described and claimed in ourcopending divisional application for Well Packer Apparatus, Serial No.368,638, filed July 17, 1953.

The inventors claim:

l. in apparatus of the character described: a well packer to be set in aWell bore and having a packing structure, said packer also having a bodywithin and projecting upwardly from said structure, said body having ai'luid passage therethrough extending from a point below said structureto the uppermost end of said body, said passage opening to the exteriorof the body at such point below said structure; a setting tool connectedto said packer for expanding said structure laterally outward, said toolcomprising means for depositing cementitious material around theupwardly projecting portion ot said body; and means for preventingdeposit of said cementitious material into said passage.

2, ln apparatus of the character described: a well packer to be set in awell bore and having a packing structure, said packer also having a bodywithin and projecting upwardly from said structure, said body having ailuid passage therethrough extending from a point below said structureto the uppermost end of said body, said passage opening to the exteriorof the body at such point below said structure; a setting tool extendinginto said body passage for expanding said structure laterally outward;said setting tool comprising means for depositing cementitious materialaround the upwardly projecting portion of said body; and meansreleasably connecting said setting tool to said well packer to enablewithdrawai of said tool from said body passage after expansion of saidstructure.

3. In apparatus of the character described: a well packer to be set in awell bore and having a packing structure, said packer also having a bodywithin and projecting upwardly from said structure, said body having afluid passage therethrough extending from a point below said structureto the uppermost end of said body, said passage opening to the exteriorof the body at such point below said structure; a setting tool extendinginto said body passage for expanding said structure laterally outward;said setting tool comprising means for depositing cementitious materialaround the upwardly projecting portion of said body; means releasablyconnecting said tool to said well packer to enable withdrawal of saidtool from said body passage after expansion of said structure; and meansremovable with said setting tool for closing said body passage againstthe deposit of cementitious material therewithin.

4. In apparatus of the character described: a well packer to be set in awell bore and having a packing structure, said packer also having a bodywithin and projecting upwardly from said structure, said body having auid passage therethrough extending from a point below said structure tothe uppermost end of said body, said passage opening to the exterior ofthe body at such point below said structure; a setting tool extendinginto said body passage for expanding said structure laterally outward;said setting tool comprising means for depositing cementitious materialaround the upwardly projecting portion of said body; and a readilybreakable connection attaching said setting tool to said well packer toenable said tool to be withdrawn from said body passage after expansionof said structure and breaking of said connection. f

5. In apparatus of the character described: a well packer having apacking structure thereon and a body projecting upwardly from saidstructure, said body having a passage therethrough extending from apoint below said structure to the uppermost end of said body, saidpassage opening to the exterior of the body at such point below saidstructure; a setting tool extending into said body passage for expandingsaid structure laterally outward; said tool comprising means disposedaround said body for containing cementitious material at a level abovethe upper end of said body; means releasably connecting said settingtool to said well packer to enable deposit of said cementitious materialaround the upwardly projecting portion of said body and withdrawal ofsaid tool from said body passage after expansion of said structure; andmeans removable with said setting tool for preventing the cementitiousmaterial from entering said body passage.

6. in apparatus of the character described: a well packer having apacking structure thereon and a body projecting upwardly from saidstructure, said body having a passage therethrough extending from apoint below said structure to the uppermost end of said body, saidpassage opening to the exterior of the body at such point below saidstructure; a setting tool extending into said body passage for expandingsaid structure laterally outr ward; said tool comprising means disposedaround said body for containing cementitious material at a level abovethe upper end of said body; means releasably connecting said settingtool to said well packer to enable deposit of said cementitious materialaround the upwardly projecting portion of said body and withdrawal ofsaid tool from said body passage after expansion of said structure; andmeans initially closing the upper portion of said body passage.

7. ln apparatus of the character described: a well packer having apacking structure thereon and a body projecting upwardly from saidstructure, said body having a passage therethrough extending from apoint below said structure to the uppermost end of said body, saidpassage opening to the exterior of the body at such point below saidstructure; a setting tool extending into said body passage for expandingsaid structure laterally outward; said tool comprising means disposedaround said body for containing cementitious material at a level abovethe upper end of said body; means releasably connecting f said settingtool to said well packer to enable deposit of said cementitious materialaround the upwardly projecting portion of said body and withdrawal ofsaid tool from said body passage after expansion of said structure; anda wiper member in the upper portion of said body engaging said settingtool to prevent entry of the cementitious material into said bodypassage.

8. In apparatus of the character described: a well packer having apacking structure thereon and a body projecting upwardly from saidstructure, said body having a passage therethrough extending from apoint below said structure to the uppermost end of said body, saidpassage opening to the exterior of the body at such point below saidstructure; a setting tool extending into said body passage for expandingsaid structure laterally ontward; said tool comprising means disposedaround said body for containing cementitious material at a level abovethe upperend of said body; means releasably connecting said setting toolto said well packer to enable deposit of said cementitious materialaround the upwardly projecting portion of said body and withdrawal ofsaid tool from said body passagc after expansion of said structure, saidbody having an internal groove; and a wiper member 1u said grooveengaging said setting tool to prevent entry of the cementitious materialinto said body passage; said setting tool elevating said wiper memberfrom said groove and body passage upon withdrawal of said tool from saidbody passage.

9. In apparatus of the character described: a well packer having apacking structure thereon and a body projecting upwardly from saidstructure, said body having a passage therethrough extending from apoint below said structure to the uppermost end of said body, saidpassage opening to the exterior of the body at such point below saidstructure; a setting tool extending into said body passage for expandingsaid structure laterally outward; said tool comprising a container forcementitious material engaging said packer to close the lower end ofsaid container, said container having an opening above the upper end ofsaid body through which the cementitious material can be placed intosaid container; means releasably connecting said tool to said packer toenable deposit of the cementitious material around the upwardlyprojecting portion of said body and withdrawal of said tool from saidbody passage after expansion of said structure; and means movable fromsaid body with a tool for closing the upper portion of said bodypassage.

10. in apparatus of the character described: a well device having aninitially retracted structure and a body structure projecting upwardlyfrom said initially retracted structure, said body structure having apassage therethrough extending from a point below said initiallyretracted structure to the uppermost end of said body structure, saidpassage opening to the exterior of the body structure at such pointbelow said initially retracted structure; a setting tool for expandingsaid initially retracted structure laterally outward; a releasableconnection detachably securing said setting tool to one of saidstructures, said setting tool comprising a device extending into saidpassage and engaging said body and a conrainer for cementitious materialsurrounding said body structure and bearing upon said initiallyretracted structure; means in said setting tool for urging saidcontainer and device in opposite directions to expand said initiallyretracted structure outwardly and to release said connection; and meansin said passage engaging said device to prevent cementitious material insaid container from dropping into said passage.

ll. In apparatus of the character described: a well device having aninitiaily retracted structure and a body projecting upwardiy from saidinitially retracted structure, said body having a passage therethroughextending from a point below said initially retracted structure to theuppermost end of said body, said passage opening to the exterior of thebody at such point below said initially retracted structure; a settingtool for expanding said initially retracted structure laterally outward;a releasable connection detachably securing said setting tool to saidbody; said setting tool comprising a device extending into said passageand engaging said body and a container for cementitious materialsurrounding said body and bearing upon said initially retractedstructure; means in said setting tool for urging said device upwardlyand said container downwardly to expand said initially retracted`ructure outwardly and to release said connection; and means in saidpassage engaging said device to prevent cetnentitious material in saidcontainer from dropping into said passage.

l2. in apparatus of the characterdescribed: a well device having aninitially retracted structure and a body projecting upwardly from saidinitially retracted structure, said body having a passage therethroughextending from a point below said initially retracted structure to theuppermost end ot said body, said passage opening to the exterior of thebody at such point below said initially retracted structure; a settingtool for expanding said initially retracted structure laterally outward;a readily disruptable connection detachably securing said setting toolto said body; said setting tool comprising a device extending into saidpassage and engaging said body and a container for cementitious materialsurrounding said body and bearing upon said initially retractedstructure; means in said setting tool for urging said device upwardlyand said container downwardly to expand said initially retractedstructure outwardly and to release said connection: and means in saidpassage engaging said device to prevent ccmentitious material in saidcontainer from dropping into said passage.

13. in apparatus of the character described: a well packer havin'Y apacking structure and a body projecting upwardly from said structure,said body having a passage therethrough extending from a point belowsaid structure to the uppermost end of said body, said passage openingto the exterior oi the body at such point below said packing structure;a setting tool for expanding said structure laterally outward; saidsetting tool comprising a device extending into said passage andengaging said body and a container Vfor cernentitious materialsurrounding said body engaging said packer to close the lower end ofsaid container, said container having an opening above said upper end ofsaid body through which the cementitious material can be placed intosaid container; said device including a readily disruptable connection;means in said setting tool for urging said device upwardly and saidcontainer downwardly to expand said structure outwardly and to disruptsaid readily disruptable connection; and means removable from said bodywith said device for closing the upper portion of said body passage.

in apparatus of the character de 1' a well packer having a packingstructure and a body projecting upwardly from said structure, said bodyhaving a passage therethrough extending from a point below saidstructure to the uppermost end o said body, said passage opening to theexterior of the body at such point below said packizu structure; asetting tooi for expanding said structure laterally outward: saidsetting tool comprising a device extending into said passage andengaging said body and a container for cementitious material surroundingsaid body and engaging said packer to close the lower end of saidcontainer, said container having an opening above toe upper end of saidbody through which the cementitious material can be placed into saidcontainer; said device includiny a readily disruptable connection; meansin said setting tool for urging said device upwardly and said containerdownwardly to expand said structure outwardly and to disrupt saidreadily disruptable connection; and a wiper member in the upper portionof said body engaging said setting tool to prevent entry of thecementious material into said body passage, said wiper member beingremovable rom said passage with said device upon elevation of the latterwithin said passage.

l5. in apparatus or the character described: a well packer to be set ina well bore and having a packing structure thereon, said packer alsohaving a body within and projecting upwardly from said structure; asetting tool connected to said packer for expanding said structurelaterally outward, said tool comprising a container surrounding saidbody and forming an annular space therewith for the reception ofcementitious material, the lower portion of said container engaging saidwell packer in leakproof relation to close the lower portion of saidconrainer; and means in s tor znainiaining said body and containersubstantially coaxial of each other.

16. in apparatus of the character described: a well packer to be set ina well bore and having a packing structure thereon. said packer alsohaving a body member within and projecting upwardly from said structure;a setting tool connected to said packer for expanding said structure1iaterally outward, said tool comprising a container member surroundingsaid body member and forming an annular space therewith for thereception of cemen- 1 7 titious material, the lower portion of saidcontainer engaging said well packer in leakproof relation to close thelower portion of said container; and ribs on one of said membersengageable with the other of said members to maintain said body andcontainer members substantially coaxial of each other.

Hodges June 13, 1933 10 18 Winter Apr. 10, Wickersham Oct. 15, Dale Feb.6, Burt et al Feb. 6, Cameron, Sr. July 9, Halliburton Mar. 18,Bermingham, Jr. Mar. 2, Holmes Sept. 5, Baker Apr. 3, Ticker Nov. 18,

